The influence of different aggregate skeleton matrices, as well volumetric composition and mixture stiffness, on the resistance of SMA to permanent deformation was assessed. Nine SMA with different optimised aggregate skeleton matrices, studied elsewhere, were now evaluated to permanent deformation with wheel tracking. The results were statistically analysed concerning relationship with specimens’ volumetric characteristics, Marshall properties and mixture stiffness. Aggregate skeleton optimised with the dry rodded compaction tend to produce asphalt mixtures similar to SMA designed with pre-established grading envelopes. SMA with aggregate skeleton optimised with Proctor and steel roller compaction showed higher coarse aggregates and binder contents, and thus, it is expected a better cracking resistance and durability for the same level of resistance to permanent deformation. Statistical analysis shows that the new proposed property (ratio between binder film thickness and porosity) and, ratio between Marshall stability and flow had the best correlations with permanent deformation properties.

评估了不同骨料骨架基质以及体积成分和混合物刚度对 SMA 对永久变形的抵抗力的影响。在别处研究的具有不同优化骨料骨架矩阵的九个 SMA 现在被评估为具有车轮跟踪的永久变形。结果进行了统计分析，涉及与试样体积特性、马歇尔特性和混合物刚度的关系。用干棒压实优化的骨料骨架往往会产生类似于 SMA 的沥青混合物，这些沥青混合物设计有预先建立的分级包络线。具有使用 Proctor 和钢碾压优化的骨料骨架的 SMA 显示出更高的粗骨料和粘合剂含量，因此，对于相同水平的永久变形抗力，预计具有更好的抗裂性和耐久性。统计分析表明，新提出的性能（粘合剂膜厚度与孔隙率之比）以及马歇尔稳定性与流动性之比与永久变形性能的相关性最好。